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High Current Kelvin Contacts

50 Amp rated contacts for ZIF and standard Test Socket applications.

Products/High Current Kelvin Contacts
The Engineer's Notebook

These High Current Kelvin Contact pins were originally developed to meet some of the most specialized and demanding electrical test applications in the industry. Over time, their performance and reliability became well recognized across the industry for their ability to deliver consistent, high-current Kelvin measurements in challenging test environments.

The Tooltronics HPK Series High Current Kelvin Contacts are engineered for demanding electrical test applications requiring exceptional current-carrying capability and reliable Kelvin measurements. Designed for high-power environments, these contacts provide stable, low-resistance connections under continuous load conditions.

Each HPK contact is rated for 50 amps per side continuous, making the series an excellent choice for high-current testing applications. The contacts are heat treated and finished with gold over boron nickel, providing superior conductivity, corrosion resistance, and long service life in production test environments.

Built for performance and durability, Tooltronics HPK Series Kelvin Contacts offer a robust and dependable solution for high-current, precision electrical testing.

HPK-FS-xxx

50A Rated

ZIF Applications
HPK-FS-xxx

High Current Kelvin Contact for ZIF Test Socket Applications


Compatibility .025 - .080 leads
Spacing .150" min centers
Support Sq/Rect/Round Leads
Current Rating 50 Amps per side

HPK-xxx

50A Rated

Standard Applications
HPK-xxx

High Current Kelvin Contact for Test Socket Applications


Compatibility .040 - .080 leads
Spacing .150" min centers
Support Round Leads
Current Rating 50 Amps per side

HPK-FS-1.5mm

25A Rated

Metric ZIF
HPK-FS-1.5mm

High Current Kelvin Contact for ZIF Test Socket Applications


Compatibility .025 - .080 leads
Spacing 1.5mm min centers
Support Sq/Rect/Round Leads
Current Rating 25 Amp

Key Features

  • 50 Amp current rating
  • ZIF and Standard options
  • .150" minimum centers
  • Accommodates various lead diameters
Below the Fold

High Current Kelvin Contacts for Demanding Applications

Tooltronics' High Current Kelvin Contacts are designed to provide reliable, repeatable electrical connections in demanding test environments. Rated for up to 50 Amps, these contacts are ideal for testing power relays, DC-DC converters, and other power electronics. They are compatible with both ZIF (Zero Insertion Force) and standard test socket applications.

Key Features of High Current Kelvin Contacts

  • High Current Capacity: Rated for up to 50 Amps.
  • Kelvin Contact Design: Provides accurate 4-wire measurements, eliminating the effects of lead resistance.
  • Durable Construction: Engineered for long service life and repeated test cycles.
  • Flexible Integration: Compatible with ZIF and standard test sockets.
  • Precise Orientation: Ensures stable, low-resistance connections.

What are Kelvin Contacts Used For?

Kelvin contacts, also known as 4-wire contacts, are used to make precise resistance measurements by eliminating the effect of lead resistance. This is crucial in high-current applications where even small resistances can significantly impact test results. The Kelvin configuration uses separate pairs of contacts to source current and measure voltage, ensuring accurate readings even with high currents flowing through the contact.

FAQ

What is the maximum current rating of these Kelvin contacts?

Our High Current Kelvin Contacts are rated for up to 50 Amps.

What type of test sockets are these contacts compatible with?

These contacts are designed for use in both ZIF (Zero Insertion Force) and standard test socket applications.

What materials are used in the construction of these contacts?

The specific materials used can be customized based on the application requirements. Contact us at https://tooltronicsinc.com/contact and we can discuss the options for your needs.

What is the advantage of using Kelvin contacts over standard contacts?

Kelvin contacts eliminate the effect of lead resistance, providing more accurate and repeatable resistance measurements, especially in high-current applications. They are essential for precise testing and validation of power electronics.

Need a Custom Solution?

Tooltronics specializes in custom engineering. Contact our team to discuss your specific testing requirements.

Contact Engineering